Time-Restricted Feeding: 8:16 fasting: eating for 8 hours and fasting for 16 hours; 4:20 fasting, where you eat for 4 hours and fast for 20, etc.

Fasting-Mimicking Diet: During fasting, you still eat but with certain restrictions on carbs and protein, so your body feels as if you are fasting.

So, what option is optimal for you or me, depends on a variety of variables including: state of your health, state of your fitness, your goals, your ability to follow the process in the short term or long term, any medicines you are taking, age, BMI.

There are a couple of important principles to remember while fasting.

Our bodies have Multiple Energy Sources: a) immediate energy from the food we eat, b) Glycogen stored in liver, and c) fatstored in the body, and d) lean body mass, and e) cellular debris. In different situations, body dips into appropriate energy source.

Chronobiology or body’s circadian clock dictates metabolism. For most people, metabolism is higher in the morning until early afternoon. So, it is better to eat heavier meals in at breakfast or lunch then at dinner.

The benefits of long-term fasting are numerous, seems almost too good to be true. But all theses have been demonstrated in research and personally I have experienced these:

Reverse diabetes, hypertension, lower LDL and many other health issues

Become appreciative of tastes and smells of food

Start to eat more mindfully

Learn not to panic if food is not immediately available when feeling hungry

Spend less time and money on food

Improved mental and emotional outlook

Increased lifespan and healthspan

Now for what works, what does not and how to make it work for you.

Calorie Restricted Diet is the least effective for major weight loss: An important principle is that 1 pound of body weight does not always equal to 3500 calories. If you have tried to lose weight by counting calories, you know that by eating fewer calories by the same amount, you lose less weight in the second month than the first, and you less weight in the third month than the second and so on.

As you can see from the chart, it gets harder and harder to lose weight by reducing number of calories and easy to hit a plateau.

Calories restricted diet, however, does seem to offer benefits of both health span and lifespan

All other types for fasting are effective in weight loss and other benefits. What will work for you, depends upon your tolerance.

A good strategy often is to start with Time Restricted Feeding, work up to one or more days of water fasting or Fasting Mimicking Diets (FMD).

My wife Kimberly and I started with becoming conscious of how many hours we did not eat every day. And, then we tried to stretch that period to at least 12 hours every day and longer when possible.

Next, we started with water only fasting for one day a week. For us, from Friday after dinner to Saturday dinner worked.

We did one-day-a-week water only fasts for about 4 to 5 weeks. We were working ourselves up to a 3-day and then a 5-day water only fast, but then we came across fasting mimicking diet programs. One such program is in the book: Grow a New Body, by Dr. Albert Villoldo.

So, we moved to 5-day programs of fasting mimicking diet. We are doing the ProLon protocol that consists of prepackage food and supplements developed at the University of Southern California by Valter Longo and explained in his book, The Longevity Diet . We like the results.

Fasting does have side-effects that include headache, lethargy and low energy. But these tend to resolve themselves. Drinking lots of water and staying hydrated really helps. On a longer fast, first day tends to be the most difficult.

And, finally, fasting is not recommended in the following situations,. It is best to check with your doctor and work under doctor’s supervision while fasting:

For pregnant and lactating women or children

If you are on any medications, especially for diabetes and hypertension

If you are underweight

If you are over 70 years old

Summary

There are many benefits of fasting, from more mindful eating to reversing diseases and living longer.

Several variables make up a fasting protocol: what, how, when and how frequently you eat or not eat.

There are many types of fasting: water only fasts, calories restricted diet, time-restricted feeding, and fasting-mimicking diet. What is optimal for you depends on a number of factors related to your health, fitness, and goals.

Threegeneral principles that you can use as guide to choose a protocol that may best suit you are: multiple sources of energy, autophagy and chronobiology.

Calories restricted diet is not the best for weight loss for long terms. However, you do get benefits of healthier and longer life

You can start with time-restricted feeding, extend periods of not eating and then work up to multi-day fasting.

Fasting mimicking diets are great ways to have the benefits of longer fasting.

If you have any medical issues, fast only under the care of a medical doctor.

What do you think?

Have you an experience with fasting? What worked or not worked for you? What benefits or difficulties you faced while fasting?

I and the readers of this blog would love to hear from you and learn from you.

Please click on Comment to leave your comments or question so others can benefit from your input.

These were of course not in any particular order. For example, Adequate Sleep would rate much higher in priority, probably towards the top. After all, most of us cannot even function if deprived of sleep over even a few days.

I recently read the book, Why We Sleep by Mathew Walker, Ph.D. He is a professor at University of California Berkeley and has dedicated his career to research in sleep. This is a pretty definitive book on sleep and covers the topic from almost all angles.

I have been generally aware that 7 to 9 hours of sleep is considered a must for optimal health. And, since I learned that I do make the effort to catch that much sleep and when I don’t I would make effort to catch up on that sleep during the weekends.

However, reading this book has been seriously eye opener for me. As a result, I am taking sleep as a lifestyle choice for living for optimal health now much more seriously than I used to.

Sleep Myths – Busted

Here are some myths about sleep that the research cited in the book has busted for me.

1. I can live quite well with 6 to 6.5 hours of sleep. Dr. Mathews is very definitive on research that the range of sleep for optimal health for healthy adults is between 7 to 9 hours. Of course, children have different needs for sleep and so do sick people to allow their body to recover.

He also makes distinction between “opportunity to sleep”, e.g., how long I kept my head on the pillow, and actual sleep. So, if I was “in bed” for 7 hours, it took me half an hour to fall sleep, I got up twice to go to the bathroom and each time it took me half hour to fall back to sleep, then I slept for 5.5 hour. There is some research that more than 9 hour sleep is not optimal, but that research is still controversial.

One test for adequate sleep is that if during the day you close your eyes and see yourself falling asleep, then you are not getting enough sleep.

2. Early morning sleep is more important that the late-night sleep. There are two broad categories of sleep: Rapid Eye Movement or REM happens when we are in deep dream state. In early sleep cycles, which generally happen before and shortly after mid night, most of the sleep is not REM or NREM. In early morning hours, sleep is mostly REM. Each REM and NREM have their very distinct function for brain and our physiology and we need both. The following figure from scielo.br illustrates how amount of REM sleep increases as the sleep progresses and NREM shown here as Stages 1 through 4 decreases.

In NREM sleep, for example, our brain takes information stored in short-term memory and shuffles it over to the long-term memory regions of the brain. In REM sleep then our brain builds interconnection with pre-existing long-term elements. If we miss NREM sleep, short-term memory buffers get over-written. If we miss REM sleep, we don’t get a chance to develop ways to access and use the information on the long term.

3. If I don’t sleep enough during the week day, I can always catch up during the weekend. From the REM and NREM sleep discussion above, you can probably quickly extrapolate that if we short change sleep, certain functions are not optimal on a daily basis. Information once lost, probably is lost forever – unless of course you relearn it.

Sleep is driven by two cycles: Circadian clock and a hormone Adenosine, see the picture below (from hackyourgut.com). Circadian clock drives our urge to awake while adenosine drives our urge to sleep. Adenosine only goes up after we wake up until we clear it again during sleep. More adenosine in our body the more is our urge to fall asleep. Our body’s energy level changes with change in circadian rhythm. When energy is increasing, we have the urge to wake up.

When we skip sleep, it feels that we have energy to keep going based on our circadian clock. But we may still have the urge to sleep because adenosine is still high. So, when we sleep extra during the weekend, we are clearing up any residual adenosine which clears the urge to sleep. So, we feel like we have caught up on sleep. But remember, we did not really catch up on the mental benefits of sleep for memory capture and reorganization. And, that is the missed opportunity, when we try to catch up on sleep during the weekends.

4. Alcohol and sleeping pills can make you sleep better. Alcohol makes you sleepy, so clearly it must make you sleep better. Right. Wrong. Both alcohol and sleeping pills have similar effect on the brain. They are sedatives and make you drowsy by shutting down you neo-cortex, i.e., thinking brain, activities. When monitored, your brain does not have the same physiology as if you were sleeping in either REM or NREM sleep. Hence, you find that people who take sleeping pills or night caps as sleep aids, are often groggy, lacking motor skills, lethargic, and forgetful during the next day.

5. If I am short of sleep, I will know so I can correct it. And, that is the same thing someone who is drunk would say, ”I am not drunk. I don’t feel drunk.” We just discussed above the effect of alcohol on the thinking brain, which is also the decision-making brain. Lack of sleep has exactly the same effect as being drunk.And, that is one of the reason, lack of sleep leads to car accidents.

In fact, did you know, lack of sleep causes more accidents than drunk driving. If you have slept only 4 hours or less the previous 24 hours, your chance of car crash increase by a factor of 10.

And, if you are short of sleep, it is the micro sleeps that make driving fatal. if you are sleep deprived, brain just shuts down for a second or two. And, a second or two while going at 60 miles an hour is sufficient to cause serious crashes.

6. Coffee, slapping myself, or loud music can keep me going: Turns out that research shows none of these are effective at preventing micro sleeps. The only thing that is found effective is, you pull over, stop and take a nap.

7. Caffeine is not a problem, if don’t ingest caffeinated drinks at dinner time. Half-life of caffeine is 8 hours. So, it can take up to 16 hours to purge effect of just a cup of coffee from the body. So, any caffeinated drink after lunch can probably disrupt the sleep and should be avoided to obtain highest quality of sleep.

8. Melatonin will help me sleep better. Actually this is yes and no depends upon the nuance. Melatonin does not improve the quality of sleep. It does, however, tell your brain and body when it is time to go to sleep and to start to get ready. Generally, it is released as the darkness sets in.

In our modern worlds, where darkness hardly sets in or if our body clock is messed up due to jetlag from travel, it may be helpful to have melatonin supplement to tell the body that it is time for bed. Dimming lights and shutting down screens (TV, smart phones iPads, laptops) as the bed time appraoches is an excellent way of getting your body to start producing its own melatonin.

If you do take mealtonin supplements, just be warned that melatonin pills available over the counter have great variability in the melatonin content when you compare actual vs. printed on the label. In one test, FDA found -89% to +473% variability. I recently learned that a great source of melatonin is raw pistachio. Just a few kernels of pistachio release enough melatonin that is in most pills. Check out this link from NutritionFacts.Org.

Sleep Hygiene – Best Method to Improve Quality of Sleep

Instead of taking any sleeping pills, Dr. Walker recommends the same sleep protocol that NIH recommend, see NIH published Your Guide to Healthy Sleep,
1. Stick to a sleep schedule.
2. Exercise is great, but not too late in the day.
3. Avoid caffeine and nicotine.
4. Avoid alcoholic drinks before bed.
5. Avoid large meals and beverages late at night.
6. If possible, avoid medicines that delay or disrupt your sleep.
7. Don’t take naps after 3 p.m
8. Relax before bed.
9. Take a hot bath before bed.
10. Have a good sleeping environment.
11. Have the right sunlight exposure.
12. Don’t lie in bed awake.
13. See a doctor if you continue to have trouble sleeping

SummarySleep is way at the top of lifestyle choices for optimal health. Statistics show again and again that most of us do not get enough sleep.

Dr. Mathew Walker’s book Why We Sleep is a great book if you want to learn about latest on every aspect of sleep.NIH published Your Guide to Healthy Sleep is also a great resource that summarizes healthful practices.

In this post, I covered several myths on sleep
1. I can live quite well with 6 to 6.5 hours of sleep
2. Early morning sleep is more important that the late-night sleep
3. If I don’t sleep enough during the week day, I can always catch up on the weekend
4. Alcohol and sleeping pills can make you sleep better
5. If I am short of sleep, I will know so I can correct it
6. Coffee, slapping myself, or loud music can keep me going
7. Caffeine is not a problem, if don’t ingest caffeinated drinks at dinner time
8. Melatonin will help me sleep better

If you want to improve the quality of your sleep, check out the 13 step Sleep Hygiene protocols that I summarized above. Dr. Walker and NIH recommend this method of improving your sleep quality and is proven to work better than sleeping pills.

Unless you have been living under a rock on an isolated island, I am sure you have heard that lifestyle choices have big impact on both your health and how long you live.

Living longer means not dying sooner. And, to not die sooner, you must take actions that eliminate the various ways one dies.

Living healthy, means taking actions to prevent all the ways one loses their abilities to enjoy day-to-day activities of life. Or, at least postpone the time as far into the future as possible before developing disabilities.

In both case, i.e., living longer and living healthy, lifestyle choices play crucial roles. But what are these life choices, besides the ones you hear all the time: Eat Better and Exercise.

When I started to systematically pursue this topic of living optimal lifespan possible (my goal being 120 years), with optimal health span (my goal being no disabilities), I started enumerating all areas of life in which one can take some action to make this impact.

Of course, not everything is in our control. We did not come to this earth with guarantees. Unforeseen, random event, or events that are not in our control can ruin all our goals and plans. But the objective is to not let the possibility of events not in our control prevent us from taking actions that are indeed in our control.

So, here are all 13 dimensions of lifestyle that I have discovered so far that impact health span and life span. Each subject is a very extensive topic by itself. I just very briefly summarize my personal take on these and may be an example of how I am attempting to address them in my lifestyle and where you can read about further in these blog posts.

1. Benchmarking Health: Knowing where you are is where I believe it has to all start. You go to doctor’s office and they take your physical measurements (height, weight), you vitals (pulse, blood pressure), order some measurements from the lab and then compare those with what should be “normal” for you. In Post #7 – Can biomarkers help in the quest for vitality and longevity?, I discuss the various measurements you can use as biomarkers for health. These days I measure:

2. Nutrition – That is everything that crosses our lips, what we eat or drink. I discussed the topic of nutrition in a series of eight blog posts on this subject of Optimal Nutrition, Posts #22 through #29. additionally, Post #15, #31 and #32 discuss the topic of how and when to complement the nutrition with supplements.

3. Exercise – Exercise is indispensable for building and maintaining muscle strength, flexibility, balance, endurance. There is also abundant proof that it helps with the metabolism, overall health and health of specific organs. I discussed this topic of exercise in blog post #30 – How much and what type of exercise do you need for optimal health?

4. Maintaining Musco-skelatal Integrity: Pains in the back, knees, hips, shoulder, wrists and other various joints creep up. We may think that these pains just come out of nowhere. After all, we often notice that “yesterday it did not hurt and today it hurts”. So, it got be a random event. Right?

Reality is that unless there was a trauma caused by an accident, most of these are the result of repetitive movement in un-aligned joints. The underlying cause could be neglect of the muscles, ligaments and tendons surrounding joints or prolonged asymmetrical movements, e.g., always carrying a bag on the same shoulder, or playing games such tennis or golf that inherently require asymmetrical movement.

Yoga, myofascial massages, Rolfing, rolling with foam rollers, visiting a chiropractor for body alignment, weight bearing exercises for join strengths, e-cise routines designed by Pete Egoscue are methods I have learned for maintaining musco-skeletal integrity. I discuss some of these in Post #30 – How much and what type of exercise do you need for optimal health? And Post #49 – What is the role of massage therapy in Optimal Health? Also, I discuss how you can use foam rolling for body alignment in Post #39 – Ever heard of foam rolling.

5. Maintaining Optimal Dental Health: Good dental health not only impacts quality of your life, it can also impact how long you live.

The American Heart Association published a Statement in April 2012 supporting an association between gum disease and heart disease. The article noted that current scientific data do not indicate if regular brushing and flossing or treatment of gum disease will decrease the incidence, rate or severity of the narrowing of the arteries (called atherosclerosis) that can lead to heart attacks and strokes. However, many studies show an as-yet-unexplained association between gum disease and several serious health conditions, including heart disease, even after adjusting for common risk factors.

You may also have seen health and lifestyle surveys used for estimating life-expectancy that want to know if you floss daily. If you do the models give you credit for an extra 2 to 4 years of life.

In Post #47 – What does optimal dental health look like and how to achieve it?, I discuss this topic in greater detail.

6. Maintaining Mind-body Connection: Our mind and body are inherently connected. Maintaining the connection between the two is essential for optimal health. Yoga, Tai Chi, Qigong, are some ways to develop and maintain mind-body connection. I have very limited experience with Tai Chi and Qigong. I do, however, perform Yoga as part of my lifestyle. In Post #11 – My first year of experience with Bikram Yoga, Post #12 – My second year of experience with Bikram Yoga, I describe how I incorporated Bikram Yoga into my lifestyle.

7. Enhancing and Maintaining Brain: If we lose vitality of the brain, the quality of life suffers dramatically. Alzheimer and other forms of Dementia can often be very painful way of living. Evidence is mounting that for optimal brain health, we must keep the brain stimulated with right activities. All my life, I have been very focused on left brain type of activities. As I was turning 60, I decided to do something about it and started taking piano lessons to stimulate my right brain and prevent any premature aging of the brain. I discuss the activities for maintaining optimal health in Post #57 – Optimal Mental Health – what is it and how to achieve it?

8. Stress Management: Stress is a root cause of many diseases. We have all experienced how stress can bring about disturbances in the digestive systems, back pain, high blood pressures, even heart attacks and strokes. Yoga and Meditation are two of the ways to manage stress. Perspective management is another powerful method. I got initiated in Transcendental Meditation over 30 years ago and I have been doing TM ever since with good benefits. I tackle the subject in Post #16 – What is stress really and why is it bad for longevity and health and Post #17 – Is meditation an effective antidote to stress.

9. Adequate Sleep: There is more and more evidence every day that inadequate sleep can cause all sorts of ailments. 7 to 9 hours of restful sleep is considered optimal. All my life, I thought the object of the game was to get away with as little a sleep as possible. Sleeping more than 6 hours every night is still a challenge for me. Although I am working on it to extend sleeping hours during the week and may be do some catch up sleeping during the weekends. Maybe I will tackle this topic in a future post. In Post #61 – How much sleep do we need? – I discuss the latest in sleep research.

10. Social Engagement: World-wide Study of Blue Zones, i.e., geographical areas where longest living people are clustered, showed a very surprising factor that contributed to long healthy life of people living there. Researchers found that people in Blue Zones are socially very engaged. Centenarians in these areas are engaged with tight knit groups of friends and family. So, the conclusion is that social engagement is an important factor in living longer and healthier.

11. Purposeful Living: It is well known that death rates spike after the holidays and after major life events. Researchers deduce from studies of such phenomena that people live only as long as they find life meaningful.

Of course, it needs an ongoing effort to figure out what one can derive meaning from. One may find meaning in raising kids or grand kids, contributions to society, being the best spouse one can be or from “slaying some dragon”. Some people find meaning in their faith and service to God. Others find meaning in being of service to mankind or their fellow human beings. Yet others can find meaning in their job or career.

Viktor Frankel in his book: Man’s Search for Meaning, explores this topic beautifully.

12. Make Full-use of All Modalities of Medical Care: Modern medicine has developed amazing and miraculous treatments. By making use of the modern medicine one can live much healthier and much longer. In general, the earlier you are able to catch a disease and the sooner you start treatment, better your chances are of a cure or at least minimizing the damage. Mantra for modern medicine is “early detection, early cure”

Alternative schools of medicine, such as Ayurvedic, Homeopathy, Aquapuncture, Naturopathy, offer valid means for preventative care and whole-person healing. Leveraging these modalities of medical care as appropriate can offer means for optimal healing and living. Here the rule is the age old wisdom: An ounce of prevention is better than a pound of cure.

I was even able to eliminate my severe seasonal allergies by working with doctors of Naturopathy and thus was able to totally change the vector of my health as I discuss in Post #8 – So, did I you tell you the story of my allergies. Also strengthening your immune system can have major consequences on how your body deals with diseases as I discuss in a series of Posts #51 – 54 – How to Optimize Your Immune System – Part I through Part IV

13. Making use of Genetics Science: There is of course the truth of genetics. Genes do play a role in how long we will live and what diseases we may have the tendencies to develop. Over the last few years, however, scientists are finding that inherited genes often do not determine your destiny, it is the lifestyle that can either turn those genes on or off. This is the exciting field of epigenetics.

Studies from the filed of epigenetics do give us opportunities to leverage genes. Through genome mapping, we can find out what might be our tendencies and to what aspects of our life, therefore, we should pay particular attention. Over the last few years, I have gotten my telomeres measured – these are tips at the ends of genes that are considered to act like our lifespan clocks. I discussed this in Post #50 – How to optimize your health by maximizing your telomeres. More recently, I have sent for genetic testing to be able to receive personalized genetics bases lifestyle coaching. I will share results of that experiences in a future post.

The percent of role of genes that we cannot do anything about is constantly shrinking all the time. Now it is believed that only between 5% to 15% of lifespan and health span is determined by genes that we have no control over.

Bottomline:

In summary, researchers have shown again and again that health span and life span depend upon one’s lifestyle choices. A holistic look at lifestyle choices means many different and distinct areas of life.

I shared my take on these dimension of lifestyle and some of my experience. Also, gave references to where you can find more information, whenever, I have already discussed that topic in more detail in my blog posts.

Benchmarking Health

Nutrition

Exercise

Maintaining Musco-skelatal Integrity

Maintaining Optimal Dental Health

Maintaining Mind-body Connection

Enhancing and Maintaining Brain

Stress Management

Adequate Sleep

Social Engagement

Purposeful Living

Making full-use of all modalities of medical care

Making use of Genetics Science

What do you think?

Do you think there some other dimension of lifestyle that I did not address here that is also important?

I would love to hear from you and learn from you.

Please click on Comment to leave your comments or question so others can benefit from your input.

How do we die and how do we lose vitality questions so far have focused my attention on the hurdles to overcome. Some of these have to do with challenges that shorten or bring end to our lifespan. Other items are “diseases” that can decrease our vitality and vigor.

All of these items are, of course, important. For the moment, however, let me step away from these hurdles and reframe the questions.

Let us say, I don’t really have any disease, but I want to live a lifestyle to achieve the optimal health and lifespan. How can I objectively assess where I am presently and then either maintain or improve from here? In other words, how to pursue living an optimal health and vitality, not merely trying to be disease free?

Study of Biomarkers has been an area of aggressive research and pursuit in vitality and aging since the 1980’s.

Biomarkers (short for biological markers) are biological measures of a biological state. By definition, a biomarker is a characteristic that is objectively measured and evaluated as an indicator of normal biological processes, pathogenic processes or pharmacological responses to a therapeutic intervention.